Sam Liu

2.6k total citations
77 papers, 1.5k citations indexed

About

Sam Liu is a scholar working on General Health Professions, Applied Psychology and Physiology. According to data from OpenAlex, Sam Liu has authored 77 papers receiving a total of 1.5k indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in General Health Professions, 27 papers in Applied Psychology and 17 papers in Physiology. Recurrent topics in Sam Liu's work include Mobile Health and mHealth Applications (28 papers), Behavioral Health and Interventions (21 papers) and Physical Activity and Health (16 papers). Sam Liu is often cited by papers focused on Mobile Health and mHealth Applications (28 papers), Behavioral Health and Interventions (21 papers) and Physical Activity and Health (16 papers). Sam Liu collaborates with scholars based in Canada, United States and Hong Kong. Sam Liu's co-authors include Ryan E. Rhodes, Robert P. Nolan, Sean D. Young, Scott Thomas, Alexander Lithopoulos, Chun‐Qing Zhang, Mauricio A. García-Barrera, Renee Garett, Jack M. Goodman and Shawn P. Lacombe and has published in prestigious journals such as SHILAP Revista de lepidopterología, Medicine & Science in Sports & Exercise and American Journal of Preventive Medicine.

In The Last Decade

Sam Liu

70 papers receiving 1.5k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
Sam Liu 420 383 381 317 251 77 1.5k
Leila Pfaeffli Dale 777 1.9× 457 1.2× 225 0.6× 526 1.7× 509 2.0× 29 1.8k
Adam R. Hafdahl 645 1.5× 197 0.5× 234 0.6× 430 1.4× 776 3.1× 33 2.3k
Kevin Kupzyk 267 0.6× 177 0.5× 693 1.8× 109 0.3× 154 0.6× 121 1.9k
Yang Bai 319 0.8× 132 0.3× 450 1.2× 211 0.7× 685 2.7× 103 1.9k
Claudia R. Pischke 793 1.9× 113 0.3× 373 1.0× 342 1.1× 552 2.2× 105 1.8k
Peter Kuhar 179 0.4× 184 0.5× 252 0.7× 107 0.3× 329 1.3× 8 1.0k
Artur Direito 852 2.0× 233 0.6× 94 0.2× 392 1.2× 519 2.1× 29 1.6k
Robert Furberg 548 1.3× 117 0.3× 70 0.2× 210 0.7× 486 1.9× 39 1.5k
Janna Stephens 1.1k 2.6× 262 0.7× 297 0.8× 337 1.1× 292 1.2× 22 1.7k
Patrick Gallagher 184 0.4× 279 0.7× 274 0.7× 191 0.6× 47 0.2× 31 1.1k

Countries citing papers authored by Sam Liu

Since Specialization
Citations

This map shows the geographic impact of Sam Liu's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Sam Liu with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Sam Liu more than expected).

Fields of papers citing papers by Sam Liu

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Sam Liu. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Sam Liu. The network helps show where Sam Liu may publish in the future.

Co-authorship network of co-authors of Sam Liu

This figure shows the co-authorship network connecting the top 25 collaborators of Sam Liu. A scholar is included among the top collaborators of Sam Liu based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Sam Liu. Sam Liu is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Liu, Sam, et al.. (2025). Implementation of Behavior Change Theories and Techniques for Physical Activity Just-in-Time Adaptive Interventions: A Scoping Review. International Journal of Environmental Research and Public Health. 22(7). 1133–1133.
2.
Gierc, Madelaine, et al.. (2025). MoodMover: Development and usability testing of an mHealth physical activity intervention for depression. Digital Health. 11. 609961468–609961468. 2 indexed citations
3.
Tran, Sophie, et al.. (2025). A systematic review of postpartum physical activity intervention mediators.. Health Psychology. 44(11). 1015–1027.
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Rush, Jonathan, et al.. (2024). Advancing physical activity research methods using real-time and adaptive technology: A scoping review of “no-code” mobile health app research tools.. Sport Exercise and Performance Psychology. 14(1). 250–267. 7 indexed citations
7.
Sahu, Kirti Sundar, Joel A. Dubin, Shannon E. Majowicz, Sam Liu, & Plinio Pelegrini Morita. (2024). Revealing the Mysteries of Population Mobility Amid the COVID-19 Pandemic in Canada: Comparative Analysis With Internet of Things–Based Thermostat Data and Google Mobility Insights. JMIR Public Health and Surveillance. 10. e46903–e46903. 1 indexed citations
8.
Naylor, Patti‐Jean, Ryan E. Rhodes, Sam Liu, et al.. (2023). Piloting the Virtual PLAYshop Program: A Parent-Focused Physical Literacy Intervention for Early Childhood. Children. 10(4). 720–720. 3 indexed citations
9.
Jibb, Lindsay, William Liu, Jennifer Stinson, et al.. (2023). Supporting parent capacity to manage pain in young children with cancer at home: Co‐design and usability testing of the PainCaRe app. SHILAP Revista de lepidopterología. 6(3). 80–88. 6 indexed citations
10.
Liu, Sam, et al.. (2023). Exploring the Feasibility of Using ChatGPT to Create Just-in-Time Adaptive Physical Activity mHealth Intervention Content: Case Study. JMIR Medical Education. 10. e51426–e51426. 10 indexed citations
11.
Nuss, Kayla, Wuyou Sui, Ryan E. Rhodes, & Sam Liu. (2023). Motivational Profiles and Associations With Physical Activity Before, During, and After the COVID-19 Pandemic: Retrospective Study. JMIR Formative Research. 7. e43411–e43411. 4 indexed citations
12.
Rhodes, Ryan E., et al.. (2023). Effects of Mobile-Based Financial Incentive Interventions for Adults at Risk of Developing Hypertension: Feasibility Randomized Controlled Trial. JMIR Formative Research. 7. e36562–e36562. 9 indexed citations
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Perdew, Megan, Sam Liu, Ryan E. Rhodes, et al.. (2020). The Effectiveness of a Blended In-Person and Online Family-Based Childhood Obesity Management Program. Childhood Obesity. 17(1). 58–67. 12 indexed citations
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Liu, Sam & Sean D. Young. (2016). A survey of social media data analysis for physical activity surveillance. Journal of Forensic and Legal Medicine. 57. 33–36. 26 indexed citations
19.
Liu, Sam, Dina Brooks, Scott Thomas, Günther Eysenbach, & Robert P. Nolan. (2014). Lifesource XL-18 pedometer for measuring steps under controlled and free-living conditions. Journal of Sports Sciences. 33(10). 1001–1006. 11 indexed citations
20.
Nolan, Robert P., Sam Liu, J. Kevin Shoemaker, et al.. (2012). Therapeutic Benefit of Internet-Based Lifestyle Counselling for Hypertension. Canadian Journal of Cardiology. 28(3). 390–396. 40 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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